Is It Okay to Touch Mars?

source: Vsauce     2016年11月10日
Watch Nat Geo's MARS Monday 11/14 at 9/8c: http://makemarshome.com/
Watch Kevin and Jake's videos! https://www.youtube.com/watch?v=5_MhE...
*Thanks to Nat Geo for sponsoring this video*
Earth and Mars size comparison: http://www.space.com/16871-how-big-is...
calculate how much you’d weigh on Mars: http://www.exploratorium.edu/mars/you...
Martian ‘sun dial’:
http://www.universetoday.com/96930/cu...
http://mars.nasa.gov/multimedia/inter...
Touching Mars images (walnut regolith): http://www.nasa.gov/centers/ames/mult...